The Flintstones & WWE: Stone Age SmackDown! is a 2015 American direct-to-video animated film starring The Flintstones. It is the second co-production between Warner Bros. Animation and WWE Studios following Scooby-Doo! WrestleMania Mystery. The film features Fred Flintstone, Barney Rubble and the whole Bedrock gang with stone age versions of WWE Superstars and Divas. It was released on March 10, 2015, by Warner Home Video.

Plot

Fred Flintstone has promised his wife Wilma they will take a vacation. He wants to request days off work and money from his boss Mr. Slate who just then is hiring an indirect relative named John Cenastone. After getting into trouble, Fred is saved by Cenastone. Fred doesn't receive money from Mr. Slate and Fred doesn't know how to tell Wilma the bad news. At a fair organized by the Lodge of the Water Buffaloes, Fred devises a way to earn money: he enlists Hoppy, the "hoparoo" of his friend Barney Rubble, to challenge people to boxing matches. When they arrive, among other attractions are the Boulder Twins who open a kissing booth causing jealousy in Fred and Barney's wives Wilma and Betty.